/// <summary>
/// select question from question link
/// </summary>
/// <param name="question"></param>
public void SelectBack(Question question)
{
while (QuestionLink.Last() != question)
{
QuestionLink.Remove(QuestionLink.Last());
}
updateByCurentQuestion();
}
/// <summary>
///
/// </summary>
/// <param name="answer"></param>
public void SelectAnswer(Answer answer)
{
Question subq = QuestionLink.Last().getQuestionByAnswer(answer.Id);
if (!QuestionLink.Contains(subq))
{
QuestionLink.Add(subq);
updateByCurentQuestion();
}
}
/// <summary>
/// updates model by current questions
/// </summary>
private void updateByCurentQuestion()
{
Answers.Clear();
//last question in question link is actual
Question rootQuestion = QuestionLink.Last();
if (rootQuestion == null)
{
ActualQuestion = "K dispozícii nie sú žiadne otázky.";
return;
}
ActualQuestion = rootQuestion.Text;
//actualise answers by current question
foreach (KeyValuePair <int, Model.Answer> answ in rootQuestion.PossibleAnswers.Where(a => rootQuestion.getQuestionByAnswer(a.Key) != null))
{
Answers.Add(new Answer()
{
Id = answ.Key,
Text = answ.Value.MainText,
Detail = answ.Value.Detail
});
}
}